Expanding brush



G. J. MEYER ET AL EXPANDING BRUSH Filed April 25, 1921 IN E N TOQS ATTORNEY tional view of a device Patented May 5, 1925.

UNITED STATES PATENT OFFICE; W

GEORGE JOHN MEYER AND EDWARD ALBERT 'I'ISCI-IER. OF MILWAUKEE. WISCONSIN, ASSIGNORS TO GEORGE J. MESJ'ER MANUFACTURING COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

EXPANDING BRUSH.

Application filed April 25, 1921. Serial No. 464,420.

-ll'isc onsin. have invented" new and useful Improvenwnts in Expanding Brushes, of which the following is a'description, reference beiughad to the accompanying drawings. which are a part of this specification.

The invention relates to expanding brushes for washing bottles or othercontainers.

()ne of the objects of the invention is to provide a brush having backs in which the bri tlesn1ay be wire bound and readily renewed. i

.1 further object of the invention is to provide-a brush having separable sections readily removable from their support.

The invention further consists in the several features hereinafter set forth and more pzn'ticularly defined by claims at the conclnsion hereof.

In the drawings: Fig. 1 is a vertical secembodying the invention: Fig. 2 is a detail view of the brush in an open condition: Fig. 3 is a detailsectiou taken on the line 33 of Fig. 1: Fig. l is a side view of the device. the bristles eing omitted.

in tile drawings. the numeral 4 designates a pair of complementary brush backs, each having a semicylindrical body portion 5 and a shank portion ti provided with laterally extending ears 7 oti'set from the axis of rotation of the device.

The backs at are mounted in a holder 8 composed of semi-cylindrical sections ,9 hingcdly connected together at their lower cnds. as by apin 10 mounted in one section and passing through an car 11 in the other sect ion. These sections have conlplcmcntary recesses forming a recess12 with pockets 13 adjacent this'recess. The shank portions ti of the backs l. tit. in the recess 12 and the cars I in the pockets l3. 7 I The body pofi'tions 5 of the backs have inner surfaces 14 extending at an angle to the inner surface 15 of shank portions ther of and are provided with recesses 16 outheir innersides.

Bristles 17 are secured to each of the backs by wires 18. the bristles being fastened by the wire bound or drawn method whereby interior of the bottle.

the wire passes through the looped end 19 of each set of bristles which are drawn into openings 20 in the backs, the wire being passed through smaller openings 2-1 communicating with the openings 20 and the recess 16 This construction is made possible by forming the backs of separable sections and by it worn bristles may be. readily replaced without the necessity of furnishing a complete new brush.

The holder 8 has a threaded end 22 fitting in a threaded socket 23 forming part of a conduit for introducing washing liquid into the bottle 24, or other container, to be washed, the joints between sections 9 and between the backs being loose enough to permit the ready passage of water from the conduit into the bottle. This threaded conneetion between the holder and socket clampsthe sections 9 together and holds the backs in place.

As here shown the conduit is formed by a pipe 25 receiving liquid from any suitable source of supply and reinforced by an outer tube 26. This pipe structure which supports thebrush is movable into and out of the bottle and rotated in the usual manner. The bottle 24 is disposed within a holder 27 in inverted position and its mouth rests; upon the upper end 28 of a dram pipe 29.

The weight of the backs 4 above their pivots normally acts to hold the body portions thereof separated. as shown in Fig. 1, and the action of centrifugal force upon these backs when the brush is rotated holds them in this position and exerts pressure upon the bristles to keep them in contact with the In order to relieve the shank portions 6 of shearing or tor sional strains setup by the rapid rotation of the brush. atongue 30 is provided on each back adapted to fit in a recess 31 in the upper end of the holder when the body portions of the brush members are separated. Vhen the brush is passed through the neck of the bottle the inner flat surfaces 14 of the members "4 are moved into contact with or close to each other, the pressure of the" bristles upon the bottle automatically moving the members to this position so that the body portions of the members 4 do not interfere with the entry of the brush into the bottle. lVhen the brushis rotated and the body portions 6 assume an inclined oil position with respect to the axis of rotation of the brush the surfaces 15 of the shank port-ions come close together but do not interfere with this spreading action which is limited by the tongues 30 acting as stops. On the removal of the holder 8 from its support it can be opened up on its hinge connection, as shown in Fig. 2, whereupon the backs 4' may be lifted out of the sections of the holder.

We desire it to be understood that this invention is not to be limited to any specific form or arrangement of parts except in so far as such limitations are specified in the claims.

What we claim as our invention is:

1. In an expanding brush, the combination of a rotatable brush holder having a central cavity opening towards its end, a pair of complementary brush backs having shank portions pivoted to the brush holder within the cavity to swing freely outward under centrifugal force to limit positions determined by engagement with opposite Walls of said cavity, said shanks being removably connected to said holder and said brush backs having recesses and brush tuft openings for wire-drawn tufts communieating with said recesses.

2. In an expanding brush, the combination of a rotatable brush holder having separable recessed sections, and a pair of complementary brush backs having bristle-holding portions and shank portions provided with pivots axially spaced removahly seated in the recessed portions of said sections in a plan normal to the axis of the brush holder and permitting thebristle-holding portions to swing outwardly. said blacks with their pivots being directly removable from said holder when the sections are sep arated.

3. In an expanding brush. the combination of a rotatable brush holder haviugseparable recessed sections, a pair of complementary brush backs having bristlediolding portions: and shanks provided with laterally extending ears pivotally mounted in the recessed portions of said section in a plane normal to the axis of the brush holder and permitting the bristle'holdingportions to swing outwardly.

4. In an expanding brush, the combination of a brush holder having separable recessed sections, a pair of complementary brush backs having bristleholding portions and shank portions provided with pivots removably seated in the recessed portions of said sections and permitting the bristleholding portions to swing outwardly, and means for relieving said shank portions of strains due to rotation, said backs being directly removable from said holder when the sections are separated.

5. In an expanding brush, the combination of a brush holder having separable recessed sections, a pair of complementary brush backs having bristle-holding portions and shank portions provided with pivots removably seated in the recessed portions of said sections and permitting th bristle-holding portions to swing outwardly, and having tongue and groove connections with the sections of said holder for relieving said shank portions of strands due to rotation, said backs being directly removable from said holder when the sections are separated.

6. In an expanding brush, the combination of a brush holder having separable recessed sections hingedly connected together and having a continuous thread at its lower end, a socket member into which the threaded end fits and by which the sections are held clamped together, and a pair of complementary brush backs having bristleholding portions and shanks provided with laterally extending ears pivotally seated in the reces ed portions of said sections and permitting the bristle-holding portions to swing outwardly, said shanks being directlyremovable from the sections of the holder when the holder is disconnected from said socket.

7. In an expanding brush, the combination of a brush holder having separable recessed sections and having a continuous thread at its lower end, a socket member into which the threaded end fits and by which the sections are held clamped together, a pair of complementary brush backs having bristle-holding portions and shanks provided with laterally extending ears pivotally seated. in the recessed portions of said sections and permitting the bristle-holding portions to swing outwardly, and an interlockingconnection between said hacks and the sides of said holder when the backs are in expanded position to relieve said shanks of strains due to rotation. said shanks being directly removable from the sections of the holder when the holder is disconnected from said socket.

8. In an expanding lmttle-washiug brush, the combination of a separable holder. a pair of complenunitary brush backs having scmicylindrical tuft-holding portions and shank portions extcnding'into the holder and pivoted thereto to swing freely outward within certain limits,said tuft-holding portions having recesses and brush tuft-receiv ing openings for wire-drawn brush tufts communicating with said recesses.

In testimony whereof, we aflix our signatures, in presence of a witness.

GEORGE JOHN MEYER.

EDWARD ALBERT TISCHIIR. Witness:

JOSEPH O. WUTISH. 

